Color

#18009e

#18009e
hex#18009e
rgbrgb(24, 0, 158)
hslhsl(249, 100%, 31%)
oklchoklch(0.324 0.214 269.5)
Closest name: Cobalt (#030aa7)Relative luminance 0.0266

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#869e00

#00379e · #67009e

#9e1800 · #009e18

Split-complementary

Open in tool →

#9e6700 · #379e00

#9e0037 · #869e00 · #009e67

Contrast

#18009e as textRatioAAAA largeAAAFix
Aaon white
13.7:1passpasspassPasses AAA — no fix needed.
Aaon black
1.53:1failfailfail
  • AA: use #745cff as the text (4.72:1)
  • AAA: use #9785ff as the text (7.11:1)
  • AA: or shift the background to #949494 (4.52:1)
  • AAA: or shift the background to #bababa (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #18009e as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#18009e reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #18009e
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #18009e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/18009e-a79cc4-dfae4e-271f2d-e9ecf1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md